All About Circuits

POWER UNITS

A

alim

Joined Dec 27, 2005
113
Originally posted by skarthikeyan94@Jan 16 2006, 12:46 PM
Why the capacities of stabilizers and UPS are quoted in VA and kVA?
What is the relation between VA and watt?
[post=13178]Quoted post[/post]​
Click to expand...
Stabilisers UPS Transformers, are all rated in VA or KVA,to state how much current times its voltage should be consumed.What it means is while a device(non-resistive) is connected and draws 1 amp at 100volts the WATTAGE is 100 ,but being non-resistive there is some reactive current, which is wasted-the amount depends on the power factor of the cct.Wattage =VxA xpf. If pf= 0.9 VA=100/0.9=111 VA.
 
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
dr3iz How to connect PMOS in parallel Power Electronics 8
cmartinez Regulating from 16V to 3.3V at minimum possible power loss Power Electronics 32
D How can I power 13 External Hard Drives (requiring 12V, 3A each) using 1 or 2 Power Supply Units? Power Electronics 37
B Need cable to get power between 2 units Power Electronics 5
U positive / negative power supply from two separate units? Power Electronics 6
Similar threads
How to connect PMOS in parallel
Regulating from 16V to 3.3V at minimum possible power loss
How can I power 13 External Hard Drives (requiring 12V, 3A each) using 1 or 2 Power Supply Units?
Need cable to get power between 2 units
positive / negative power supply from two separate units?

You May Also Like

Top